Monoalkyl carbonates in carbonated alcoholic beverages

► Monoethyl carbonate is formed in aqueous medium containing ethanol and bicarbonate. ► Monoethyl carbonate was detected in samples of beer and sparkling wine. ► It is also formed in drinks prepared by mixing a spirit and a soda. ► Despite the loss of CO2, monoethyl carbonate is formed at low pH. ► Interconversion of bicarbonate and monoethyl carbonate is faster at low pH.